Daily Practice · GCSE Science

Daily Practice - GCSE Science

31st July 1993

5 questions · GCSE · 584 questions in this band

1
Reactivity, Acids and Salts
Complete: acid + metal carbonate gives ...
2
Electrolysis
Molten zinc chloride, ZnCl2, is electrolysed using inert electrodes. Write the half equation for the reaction at (a) the cathode, and (b) the anode.
3
Energy Changes
Using the values in the previous question, calculate the overall energy change for the reaction.
4
Exothermic and Endothermic Reactions
State what is meant by the activation energy of a reaction.
5
Bond Energies, Cells and Fuel Cells
State whether forming a new chemical bond requires energy or releases energy.

You are looking at an earlier sheet. Today's sheet is the one that adds a day.

Your run is kept in this browser only, and there is no account.

Any date always gives the same five questions, so a sheet can be set again or shared. All of July 1993, including the monthly compilation PDF.